The description of the Mussel value chain in France has been carried out in the framework of the SUCCESS project (WP4) funded by the EU Horizon 2020 programme. This working document starts with an overview on the French mussel market through the analysis of the global trends in supply (production, import/exports) and demand. On the demand side, a particular attention is paid to the main features of fresh mussel consumption at home and out of home. The second part is dedicated to the description of the French value chain, focusing on the fresh, live mussel market which represents the major outlets for the French production. For the drawing up of the value-chain map, 4 stages have been identified which cover 1) the domestic production and import sectors, 2) the supply grouping through shellfish trading companies, 3) the wholesale market and 4) the retail and the catering sectors. Their description is completed by first insights into the “price transmission” along the value chain. The document concludes with some issues at stakes for the co-ordination of the French mussel value-chain, especially as regard the development of quality/labelling approaches and product innovation.